Nonskid tire



etented den. 2i?, m2@

OT'I IEL'U, 0F HANOVER, GERMANY, ASSGNOR TO CGNTNENTAJ CATCHOUC-U'ND GUTTA-PERCHA-COMIPAGNE, OE* EANOVER, GERMANY,

NONSKIID TIRE.

application filed July 2'?,

To all tty/'wm t may concern:

Be it known that I, O'rTo inn-io, a citizen ofthe Republic of Germany, and residingat 54 Langenforth, Hanover, Germany, have invented certain new and useful improvements in lNonskid Tires; and I do hereby declare the following to be a full, clear, and exact description otl the invention.

This invention relates te an india-ruhber non-skid tire wherein two longitudinal ribs are arranged on the tread at a certain distance from each other.

The present construction is shown in the accompanying drawing, in which the figure illustrates the tread portion of the tire in' perspective.

The present invention, is distinguished from known tires, by the tact that crossshaped skid-resisting members o are arranged between the longitudinal ribs. c.

In the case oi these skid-resisting blocks, the part ot' the bloei; extending longitudinal- 1y is kept somewhat higher than the trans- Verse part. rEhe transverse parts are rounded at their points of attachment to the longitudinal parts. On the outer sides of the two longitudinal ribs there are provided three lower ribs e. A non-skid tire of this description results, more especially when .starting or stopping the vehicle, in a splendid grip on the ground, berause there are numerous gripping teeth. Similarly however there are numerous gripping edges in the'vertical direction, whieh, as the vehicieslips laterally, give rise to a multiple resistance to slippinfr.

1t Inay be pointed out'that they circumferentially extending portions of the blocks b form in effect an interrupted mid rib for the tread which is ot greater transverse extent than either ot the continuous longi-I tudinal ribs a, between which the blocks are arranged.

iin the ease of the present invention, ow-

1921. Serial N0. 487,928.

ing to the characteristic torni of the tread and of the crueiitorm blocks,y protection against slipping is provided which is operative in alidirections. The above-mentioned rounding` ott' of the transverse portions of the eross-shaped blocks7 at the points. where they join on to the longitudinal parts, is provided in order to su ppl y a. gradual transition which will obviate any tearing or in-` juring of the transverse parts ot' the cruciform blocks. This" rounding ofi might, of course, aise be effected at the points ot junction with the iongitudinal ribs.

I claim:

l. A skid-resisting tire having on its tread a plurality oi' transversel).v spaced eontinuous circumferential ribs and intermediate erueitorm blocksr` the rire-muterentially extending portions` o the blocks constituting an interrupted mid rib ot' substantially the same elevation as the transversely spaced continuous ribs, and the transverse portions ot' said erueitorm blocks extending' between said continuous ribs and the circumferentially extending portions of the blocks.

2. A skid-resisting tire havin;r on its tread a plurality ot' transversely spaced continuous circumferential ribs and intermediate crueiform blocks, the circumferentially extending pontions of the blocks having a greater transverse width than the continuous ribs, and constituting an vinterrupted mid rib ot substantially the saine elevation as the transversely spaced continuons ribs, and thev transverse portions of said eruciform blocks extending between said Vcontinuous ribs and the circuinterentially extending portions'of the blocks.

In testimony that clarinrthe toregoing as my invention, I have signed my naine.v

OTTO IHLAU. 

